Evans Waterless Coolant PREP Fluid

Conversion fluid for an all engine flush
Available also in one gallon

Prep Fluid

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Our Price: $24.95

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Product Information

Evans Prep Fluid is a waterless cooling system flush engineered specifically to purge the cooling system of water-based antifreeze after draining and before installing new waterless coolant. Prep Fluid should be used when block drains are unavailable or cannot be removed. It is not a substitute for thoroughly draining the cooling system and related components. Prep Fluid is NOT intended to be a stand-alone operating coolant, but as a flush only.

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Engine Types

For use with all engines being converted to any Evans waterless coolant, after draining 50-50 coolant from the cooling system.


Evans Prep Fluid is ready to use—no water required.

  • Hygroscopically absorbs water
  • Ensures all residual water is removed from the system
  • Ensures that Evans coolants will meet the water content limits and provide peak performance
  • Protects cooling system metals during flush
  • Learn more about waterless coolants ›


To ensure success using Prep Fluid to prepare your cooling system for Evans waterless coolants and to determine the amount of Prep Fluid needed, follow the recommended installation procedure.

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